According to ABC7, Schaefer (at left) was killed with a “bone-crusher”, a metal knife that, according to an official at the prison, “can truly pierce through a person.” It happened on Monday.

The Marin IJ interviewed Schaefer’s mother, Sheri Dunne who says her son was stabbed six times by inmates. Schaefer died later undergoing surgery at Marin General Hospital.

In May 2009, Schaefer ran his motorcycle at 60 mph through an intersection in Novato while Melody Osheroff and her father, Aaron, were walking home. The impact caused Melody (pictured at right) to die at the scene, while her father sustained injuries that caused him to lose his leg.